1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2010 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#include	"sfhdr.h"
23
24/*	Write out a character n times
25**
26**	Written by Kiem-Phong Vo.
27*/
28
29#if __STD_C
30ssize_t sfnputc(Sfio_t* f, int c, size_t n)
31#else
32ssize_t sfnputc(f,c,n)
33Sfio_t*		f;	/* file to write */
34int		c;	/* char to be written */
35size_t		n;	/* number of time to repeat */
36#endif
37{
38	reg uchar*	ps;
39	reg ssize_t	p, w;
40	uchar		buf[128];
41	reg int		local;
42	SFMTXDECL(f);
43
44	SFMTXENTER(f,-1);
45
46	GETLOCAL(f,local);
47	if(SFMODE(f,local) != SF_WRITE && _sfmode(f,SF_WRITE,local) < 0)
48		SFMTXRETURN(f, -1);
49
50	SFLOCK(f,local);
51
52	/* write into a suitable buffer */
53	if((size_t)(p = (f->endb-(ps = f->next))) < n)
54		{ ps = buf; p = sizeof(buf); }
55	if((size_t)p > n)
56		p = n;
57	MEMSET(ps,c,p);
58	ps -= p;
59
60	w = n;
61	if(ps == f->next)
62	{	/* simple sfwrite */
63		f->next += p;
64		if(c == '\n')
65			(void)SFFLSBUF(f,-1);
66		goto done;
67	}
68
69	for(;;)
70	{	/* hard write of data */
71		if((p = SFWRITE(f,(Void_t*)ps,p)) <= 0 || (n -= p) <= 0)
72		{	w -= n;
73			goto done;
74		}
75		if((size_t)p > n)
76			p = n;
77	}
78done :
79	SFOPEN(f,local);
80	SFMTXRETURN(f, w);
81}
82